History of British animals - University of Guam Marine Laboratory

356 MOLLUSCA. MURICIDiE. Typhis.Gen. TYPHIS. — Oval, aperture suborbicular, canal shortycovered ;whorls with numerous tubular pervious processes.1. T. fistulosus.— Oblong, varicose; each varix foliated and produced abovein a recurved tube ; aperture obovate, entire ;beak nearly straight,closed.— (Murex pungens, Brander,f. 82.)— M. fist. Sower. Min. Conch, t. clxxxix.f.1, 2.—London Clay.2. T. tubifer.—Ovate, with four rows of erect tubes alternating with foursolitary tubes upon each whorl ; aperture obovate, entire ;beak arched,closed— (Murex pungens, Brander, 81.)— f. T. tubifer, Park, Org. Rem. iii.(>5. t. v. f. 15.— London Clay.Gen. LXXXI. TRITON.— Ovate, oblong; canal produced,subascending, or bent to the left ;not continuous on the whorls.ribs alternate or remote,351. T. erinaceus.— Whorls eight, with seven rugose, longitudinalribs crossed by strong spiral striae.Murex er. Perm. Brit. Zool. iv. 123. t. lxxvi. f. 95. Don. Brit. Shells,t. xxxv. Mont. Test. Brit. 259 Rocky shores.Length nearly 2 inches, breadth 1 inch ; brown ;strong ; whorls angular,sloping abruptly at the junctions, with imbricated arched scales; apertureoval ; canal subtubular ; outer-lip striated internally, pillar-lip smooth.EXTINCT SPECIES.1. T. tuberosus.— Ovate, pointed, transversely striated, with many bluntshort costa? upon each whorl ;base convex—Murex tub. Sower. Min. Conch.t. ccxxix. f. 1.— London Clay.2. T. minax Short, transversely striated ; spire tuberculated, acute ; lastwhorl ventricose, with two rows of tubercles the ; upper ones spiniform, furrowed;base sulcated ;beak curved.— Murex-minax (Brander, f. 02.) Sower.Min. Conch, t. ccxxix. f. 2.3. T. cristatus Ovate, transversely striated ; longitudinal costse prominent,sharp, with three large plaits in each, the upper plait subspiniform ;beak curved.— Murex crist. Sower. Min. Conch, t. ccxx. f. 1, 2.— London Clay.4. T'. coronalus.— Oblorg, transversely furrowed ; costa? numerous, sharp;upper part of the volutions concave, bounded by a sharp ridge and a strongspine upon each of the costre. Murex — cor. Sower. Min. Conch, t. xxiii. f. 3.— London Clay.5. T. argutus Ovate, pointed, costated, spirally striated; costa? knotted fstriae many, elevated, several of them large; varices few ; whorls inflated bevondeach" varix ; aperture toothed ;beak ascending.—Murex varg. (Brander,f. 13.) Sower. Min. Conch, t. cccxliv.—London Clay.C. T. alveolatus Ovate acuminated ; surface divided into square cells bymany acute sutures that decussate eight or ten prominent carina? ;whorlsventricose, flattened above ; aperture oval ; the outer lip toothed within—Murex alv. Sower. Min. Conch, t. ccccxi. f. 2—In Crag.7. T. defossus. —Ovate acuminated, smooth ;whorls ventricose, bearingmany obtuse carina? ;sutures numerous, acute, linear ;aperture elongated,with many lamelliform teeth within its outer lip.— Buccinum def. Pilk. Linn^